Open a socket and start sending a lot of data for an hour. ( with a tcm_bf537bp)

I avoided the problem for now by increasing the number of windows in the kernel settings. I disabled the L1 ethernet buffers earlier, but I left the number of windows unchanged. Now I increased the number of windows and I did not see the problem again.

We also encoutered this issue under bad network condition, such as access bfin device from remote mobile client through GPRS with heavy traffic. As above mentioned, we disable L1 and increased tx buffer to 40. Unfortunately, the error message still appear after 2~3 hours.